The yeast two-hybrid system was used to screen for proteins that interact in vivo with Saccharomyces cerevisiae Rpg1p/Tif32p, the large subunit of the translation initiation factor 3 core complex (eIF3). Eight positive clones encoding portions of the SLA2/END4/MOP2 gene were isolated. They overlapped in the region of amino acids 318-550. Subsequent deletion analysis of Sla2p showed that amino acids 318-373 were essential for the two-hybrid protein-protein interaction. The N-terminal part of Rpg1p (aa 1-615) was essential and sufficient for the Rpg1p-Sla2p interaction. A coimmunoprecipitation assay provided additional evidence for the physical interaction of Rpg1p/Tif32p with Sla2p in vivo. Using immunofluorescence microscopy, Rpg1p and Sla2p proteins were colocalized at the patch associated with the tip of emerging bud. Considering the essential role of Rpg1p as the large subunit of the eIF3 core complex and the association of Sla2p with the actin cytoskeleton, a putative role of the Rpg1p-Sla2p interaction in localized translation is discussed.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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